/*var devicePixelRatio=window.devicePixelRatio
var scale = 1 / devicePixelRatio;
console.log(scale);
document.querySelector('meta[name="viewport"]').setAttribute('content','initial-scale=' + scale + ', maximum-scale=' + scale + ', minimum-scale=' + scale + ', user-scalable=no');
*/
var clientWidth=document.documentElement.clientWidth;
clientWidth=clientWidth>750?750:clientWidth;
document.documentElement.style.fontSize = clientWidth / 7.5 + 'px';
